| Designated area |
Designation |
Classification |
| Date 1 |
Type |
Date 1 |
Type |
| Calaveras County, CA: 2 Calaveras County |
|
Nonattainment |
|
Marginal. |
| Chico (Butte County), CA: 2 |
|
Nonattainment |
|
Marginal. |
| Butte County |
|
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| Berry Creek Rancheria of Maidu Indians of California 3 |
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| Enterprise Rancheria of Maidu Indians of California 3 |
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| Mechoopda Indian Tribe of Chico Rancheria 3 |
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| Mooretown Rancheria of Maidu Indians of California 3 |
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| Imperial County, CA: 2 |
|
Nonattainment |
6/3/16 |
Moderate. |
| Imperial County |
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| Quechan Tribe of the Fort Yuma Indian Reservation 3 |
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| Torres Martinez Desert Cahuilla Indians 3 |
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| Kern County (Eastern Kern), CA: 2 |
|
Nonattainment |
6/3/16 |
Moderate. |
| Kern County (part) |
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| That portion of Kern County (with the exception of that portion in Hydrologic Unit Number 18090205 - the Indian Wells Valley) east and south of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Liebre Land Grant to the point of intersection with the range line common to Range 16 West and Range 17 West, San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Grant to the northwest corner of Section 3, Township 11 North, Range 17 West; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of Section 34, Township 32 South, Range 30 East, Mount Diablo Base and Meridian; then north to the northwest corner of Section 35, Township 31 South, Range 30 East; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of Section 18, Township 31 South, Range 31 East; then east to the southeast corner of Section 13, Township 31 South, Range 31 East; then north along the range line common to Range 31 East and Range 32 East, Mount Diablo Base and Meridian, to the northwest corner of Section 6, Township 29 South, Range 32 East; then east to the southwest corner of Section 31, Township 28 South, Range 32 East; then north along the range line common to Range 31 East and Range 32 East to the northwest corner of Section 6, Township 28 South, Range 32 East, then west to the southeast corner of Section 36, Township 27 South, Range 31 East, then north along the range line common to Range 31 East and Range 32 East to the Kern-Tulare County boundary |
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| Los Angeles-San Bernardino Counties (West Mojave Desert), CA: 2 |
|
Nonattainment |
|
Severe 15. |
| Los Angeles County (part) |
|
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| That portion of Los Angeles County which lies north and east of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the Township line common to Township 3 North and Township 2 North, San Bernardino Base and Meridian; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; then north along the range line common to Range 12 West and Range 13 West to the southeast corner of Section 12, Township 5 North and Range 13 West; then west along the south boundaries of Sections 12, 11, 10, 9, 8, and 7, Township 5 North and Range 13 West to the boundary of the Angeles National Forest which is collinear with the range line common to Range 13 West and Range 14 West; then north and west along the Angeles National Forest boundary to the point of intersection with the Township line common to Township 7 North and Township 6 North (point is at the northwest corner of Section 4 in Township 6 North and Range 14 West); then west along the Township line common to Township 7 North and Township 6 North; then north along the range line common to Range 15 West and Range 16 West to the southeast corner of Section 13, Township 7 North and Range 16 West; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; then north along the range line common to Range 16 West and Range 17 West to the north boundary of the Angeles National Forest (collinear with the Township line common to Township 8 North and Township 7 North); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary |
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| San Bernardino County (part) |
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| That portion of San Bernardino County which lies north and east of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to Range 3 East and Range 2 East, San Bernardino Base and Meridian; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary; and that portion of San Bernardino County which lies south and west of a line described as follows: latitude 35 degrees, 10 minutes north and longitude 115 degrees, 45 minutes west |
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| Twenty-Nine Palms Band of Mission Indians of California 3 |
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| Los Angeles-South Coast Air Basin, CA 2 |
|
Nonattainment |
|
Extreme. |
| Los Angeles County (part) |
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| That portion of Los Angeles County which lies south and west of a line described as follows: Beginning at the Los Angeles-San Bernardino County boundary and running west along the Township line common to Township 3 North and Township 2 North San Bernardino Base and Meridian; then north along the range line common to Range 8 West and Range 9 West; then west along the Township line common to Township 4 North and Township 3 North; then north along the range line common to Range 12 West and Range 13 West to the southeast corner of Section 12, Township 5 North and Range 13 West; then west along the south boundaries of Sections 12, 11, 10, 9, 8, and 7, Township 5 North and Range 13 West to the boundary of the Angeles National Forest which is collinear with the range line common to Range 13 West and Range 14 West; then north and west along the Angeles National Forest boundary to the point of intersection with the Township line common to Township 7 North and Township 6 North (point is at the northwest corner of Section 4 in Township 6 North and Range 14 West); then west along the Township line common to Township 7 North and Township 6 North; then north along the range line common to Range 15 West and Range 16 West to the southeast corner of Section 13, Township 7 North and Range 16 West; then along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 7 North and Range 16 West; then north along the range line common to Range 16 West and Range 17 West to the north boundary of the Angeles National Forest (collinear with the Township line common to Township 8 North and Township 7 North); then west and north along the Angeles National Forest boundary to the point of intersection with the south boundary of the Rancho La Liebre Land Grant; then west and north along this land grant boundary to the Los Angeles-Kern County boundary |
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| Orange County |
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| Riverside County (part) |
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| That portion of Riverside County which lies to the west of a line described as follows: Beginning at the Riverside-San Diego County boundary and running north along the range line common to Range 4 East and Range 3 East, San Bernardino Base and Meridian; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; then west along the southern boundaries of Sections 25, 26, and 27, Township 7 South, Range 4 East, then North along the west boundaries of Sections 27, 22, 15, 10, and 3 Township 7 South, Range 4 East, then East along the Township line common to Township 6 South and Township 7 South to the southwest corner of Section 34, Township 6 South, Range 4 East; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. |
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| San Bernardino County (part) |
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| That portion of San Bernardino County which lies south and west of a line described as follows: Beginning at the San Bernardino-Riverside County boundary and running north along the range line common to Range 3 East and Range 2 East, San Bernardino Base and Meridian; then west along the Township line common to Township 3 North and Township 2 North to the San Bernardino-Los Angeles County boundary. |
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| Cahuilla Band of Mission Indians of the Cahuilla Reservation 3 |
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| Ramona Band of Cahuilla 3 |
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| San Manuel Band of Mission Indians 3 |
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| Soboba Band of Luiseno Indians 3 |
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| Mariposa County, CA: 2 Mariposa County |
|
Nonattainment |
6/3/16 |
Moderate. |
| Nevada County (Western part), CA: 2 |
|
Nonattainment |
6/3/16 |
Moderate. |
| Nevada County (part) |
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|
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| That portion of Nevada County, which lies west of a line, described as follows: Beginning at the Nevada-Placer County boundary and running north along the western boundaries of Sections 24, 13, 12, 1, Township 17 North, Range 14 East, Mount Diablo Base and Meridian, and Sections 36, 25, 24, 13, 12, Township 18 North, Range 14 East to the Nevada-Sierra County boundary |
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| Riverside County (Coachella Valley), CA: 2 |
|
Nonattainment |
|
Severe 15. |
| Riverside County (part) |
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| That portion of Riverside County which lies to the east of a line described as follows: Beginning at the Riverside-San Diego County boundary and running north along the range line common to Range 4 East and Range 3 East, San Bernardino Base and Meridian; then east along the Township line common to Township 8 South and Township 7 South; then north along the range line common to Range 5 East and Range 4 East; then west along the Township line common to Township 6 South and Township 7 South to the southwest corner of Section 34, Township 6 South, Range 4 East; then north along the west boundaries of Sections 34, 27, 22, 15, 10, and 3, Township 6 South, Range 4 East; then west along the Township line common to Township 5 South and Township 6 South; then north along the range line common to Range 4 East and Range 3 East; then west along the south boundaries of Sections 13, 14, 15, 16, 17, and 18, Township 5 South, Range 3 East; then north along the range line common to Range 2 East and Range 3 East; to the Riverside-San Bernardino County line. And that portion of Riverside County which lies to the west of a line described as follows: That segment of the southwestern boundary line of hydrologic Unit Number 18100100 within Riverside County. |
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| Agua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation 3 |
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| Augustine Band of Cahuilla Indians 3 |
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| Cabazon Band of Mission Indians 3 |
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| Santa Rosa Band of Cahuilla Indians 3 |
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| Torres Martinez Desert Cahuilla Indians 3 |
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| Twenty-Nine Palms Band of Mission Indians of California 3 |
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| Sacramento Metro, CA: 2 |
|
Nonattainment |
|
Severe 15. |
| El Dorado County (part) |
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| All portions of the county except that portion of El Dorado County within the drainage area naturally tributary to Lake Tahoe including said Lake. |
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| Placer County (part) |
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| All portions of the county except that portion of Placer County within the drainage area naturally tributary to Lake Tahoe including said Lake, plus that area in the vicinity of the head of the Truckee River described as follows: Commencing at the point common to the aforementioned drainage area crestline and the line common to Townships 15 North and 16 North, Mount Diablo Base and Meridian, and following that line in a westerly direction to the northwest corner of Section 3, Township 15 North, Range 16 East Mount Diablo Base and Meridian, thence south along the west line of Sections 3 and 10, Township 15 North, Range 16 East, Mount Diablo Base and Meridian, to the intersection with the said drainage area crestline, thence following the said drainage area boundary in a southeasterly, then northeasterly direction to and along the Lake Tahoe Dam, thence following the said drainage area crestline in a northeasterly, then northwesterly direction to the point of beginning. |
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| Sacramento County |
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| Solano County (part) |
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| That portion of Solano County which lies north and east of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34; Township 6 North, Range 2 West, Mount Diablo Base and Meridian, thence east along said 1/4 section line to the east boundary of Section 36, Township 6 North, Range 2 West, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, Township 5 North, Range 1 West, thence east along a line common to Township 5 North and Township 6 North to the northeast corner of Section 3, Township 5 North, Range 1 East, thence south along section lines to the southeast corner of Section 10, Township 3 North, Range 1 East, thence east along section lines to the south 1/4 corner of Section 8, Township 3 North, Range 2 East, thence east to the boundary between Solano and Sacramento Counties. |
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| Sutter County (part) |
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| Portion south of a line connecting the northern border of Yolo County to the SW tip of Yuba County and continuing along the southern Yuba County border to Placer County. |
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| Yolo County |
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| Shingle Springs Band of Miwok Indians, Shingle Springs Rancheria (Verona Tract) 3 |
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| United Auburn Indian Community of the Auburn Rancheria of California 3 |
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| Yocha Dehe Wintun Nation 3 |
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| San Diego County, CA: 2 |
|
Nonattainment |
6/3/16 |
Moderate. |
| San Diego County |
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| Barona Group of Capitan Grande Band of Mission Indians of the Barona Reservation 3 |
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| Campo Band of Diegueno Mission Indians of the Campo Indian Reservation 3 |
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| Capitan Grande Band of Diegueno Mission Indians of California 3 |
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| Ewiiaapaayp Band of Kumayaay Indians 3 |
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| Iipay Nation of Santa Ysabel 3 |
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| Inaja Band of Diegueno Mission Indians of the Inaja and Cosmit Reservation 3 |
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| Jamul Indian Village of California 3 |
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| La Jolla Band of Luiseno Indians 3 |
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| La Posta Band of Diegueno Mission Indians of the La Posta Indian Reservation 3 |
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| Los Coyotes Band of Cahuilla and Cupeno Indians 3 |
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| Manzanita Band of Diegueno Mission Indians of the Manzanita Reservation 3 |
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| Mesa Grande Band of Diegueno Mission Indians of the Mesa Grande Reservation 3 |
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| Pala Band of Luiseno Mission Indians of the Pala Reservation 3 |
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| Pauma Band of Luiseno Mission Indians of the Pauma and Yuima Reservation 3 |
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| Rincon Band of Luiseno Mission Indians of the Rincon Reservation 3 |
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| San Pasqual Band of Diegueno Mission Indians of California 3 |
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| Sycuan Band of the Kumeyaay Nation 3 |
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| Viejas (Baron Long) Group of Capitan Grande Band of Mission Indians 3 |
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| San Francisco Bay Area, CA: 2 |
|
Nonattainment |
|
Marginal. |
| Alameda County |
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| Contra Costa County |
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| Marin County |
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| Napa County |
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| San Francisco County |
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| San Mateo County |
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| Santa Clara County |
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| Solano County (part) |
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| Portion of Solano County which lies south and west of a line described as follows: Beginning at the intersection of the westerly boundary of Solano County and the 1/4 section line running east and west through the center of Section 34, T6N, R2W, M.D.B. & M., thence east along said 1/4 section line to the east boundary of Section 36, T6N, R2W, thence south 1/2 mile and east 2.0 miles, more or less, along the west and south boundary of Los Putos Rancho to the northwest corner of Section 4, T5N, R1W, thence east along a line common to T5N and T6N to the northeast corner of Section 3, T5N, R1E, thence south along section lines to the southeast corner of Section 10, T3N, R1E, thence east along section lines to the south 1/4 corner of Section 8, T3N, R2E, thence east to the boundary between Solano and Sacramento Counties. |
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| Sonoma County (part) |
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| That portion of Sonoma County which lies south and east of a line described as follows: Beginning at the southeasterly corner of the Rancho Estero Americano, being on the boundary line between Marin and Sonoma Counties, California; thence running northerly along the easterly boundary line of said Rancho Estero Americano to the northeasterly corner thereof, being an angle corner in the westerly boundary line of Rancho Canada de Jonive; thence running along said boundary of Rancho Canada de Jonive westerly, northerly and easterly to its intersection with the easterly line of Graton Road; thence running along the easterly and southerly line of Graton Road, northerly and easterly to its intersection with the easterly line of Sullivan Road; thence running northerly along said easterly line of Sullivan Road to the southerly line of Green Valley Road; thence running easterly along the said southerly line of Green Valley Road and easterly along the southerly line of State Highway 116, to the westerly line of Vine Hill Road; thence Running along the westerly and northerly line of Vine Hill Road, northerly and easterly to its intersection with the westerly line of Laguna Road; thence running northerly along the westerly line of Laguna Road and the northerly projection thereof to the northerly line of Trenton Road; thence running westerly along the northerly line of said Trenton Road to the easterly line of Trenton-Healdsburg Road; thence running northerly along said easterly line of Trenton-Healdsburg Road to the easterly line of Eastside Road; thence running northerly along said easterly line of Eastside Road to its intersection with the southerly line of Rancho Sotoyome; thence running easterly along said southerly line of Rancho Sotoyome to its intersection with the Township line common to Townships 8 and 9 North, M.D.M.; thence running easterly along said township line to its intersection with the boundary line between Sonoma and Napa Counties. |
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| Federated Indians of Graton Rancheria 3 |
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| Lytton Rancheria of California 3 |
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| San Joaquin Valley, CA: 2 |
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Nonattainment |
|
Extreme. |
| Fresno County |
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| Kern County (part) |
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| That portion of Kern County which lies west and north of a line described as follows: Beginning at the Kern-Los Angeles County boundary and running north and east along the northwest boundary of the Rancho La Libre Land Grant to the point of intersection with the range line common to R. 16 W. and R. 17 W., San Bernardino Base and Meridian; north along the range line to the point of intersection with the Rancho El Tejon Land Grant boundary; then southeast, northeast, and northwest along the boundary of the Rancho El Tejon Land Grant to the northwest corner of S. 3, T. 11 N., R. 17 W.; then west 1.2 miles; then north to the Rancho El Tejon Land Grant boundary; then northwest along the Rancho El Tejon line to the southeast corner of S. 34, T. 32 S., R. 30 E., Mount Diablo Base and Meridian; then north to the northwest corner of S. 35, T. 31 S., R. 30 E.; then northeast along the boundary of the Rancho El Tejon Land Grant to the southwest corner of S. 18, T. 31 S., R. 31 E.; then east to the southeast corner of S. 13, T. 31 S., R. 31 E.; then north along the range line common to R. 31 E. and R. 32 E., Mount Diablo Base and Meridian, to the northwest corner of S. 6, T. 29 S., R. 32 E.; then east to the southwest corner of S. 31, T. 28 S., R. 32 E.; then north along the range line common to R. 31 E. and R. 32 E. to the northwest corner of S. 6, T. 28 S., R. 32 E., then west to the southeast corner of S. 36, T. 27 S., R. 31 E., then north along the range line common to R. 31 E. and R. 32 E. to the Kern-Tulare County boundary. |
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| Kings County |
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| Madera County |
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| Merced County |
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| San Joaquin County |
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| Stanislaus County |
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| Tulare County |
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| Big Sandy Rancheria of Mono Indians of California 3 |
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| Cold Springs Rancheria of Mono Indians of California 3 |
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| Northfork Rancheria of Mono Indians of California 3 |
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| Picayune Rancheria of Chukchansi Indians of California 3 |
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| Santa Rosa Indian Community of the Santa Rosa Rancheria 3 |
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| Table Mountain Rancheria of California 3 |
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| Tule River Indian Tribe of the Tule River Reservation 3 |
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| San Luis Obispo (Eastern San Luis Obispo), CA: 2 |
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Nonattainment |
6/3/16 |
Marginal. 5 |
| San Luis Obispo County (part) |
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| That portion of San Luis Obispo County that lies east of a line described as follows: Beginning at the San Luis Obispo County/Santa Barbara County boundary and running north along 120 degrees 24 minutes longitude to the intersection with 35 degrees 27 minutes latitude; east along 35 degrees 27 minutes latitude to the intersection with 120 degrees 18 minutes longitude; then north along 120 degrees 18 minutes longitude to the San Luis Obispo County/Monterey County boundary |
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| Tuscan Buttes, CA: 2 |
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Nonattainment |
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Marginal. |
| Tehama County (part) |
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| Those portions of the immediate Tuscan Buttes area at or above 1,800 feet in elevation. |
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| Ventura County, CA: 2 |
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Nonattainment |
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Serious. |
| Ventura County (part) |
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| That part of Ventura County excluding the Channel Islands of Anacapa and San Nicolas Islands. |
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| Morongo Band of Mission Indians 3 |
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Nonattainment |
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Serious. |
| Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation 3 |
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Nonattainment |
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Moderate. |
| Rest of State: 4 |
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| Alpine, Inyo, and Mono Counties: |
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Unclassifiable/Attainment |
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| Alpine County |
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| Inyo County |
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| Mono County |
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| Amador County |
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Unclassifiable/Attainment |
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| Channel Islands (Ventura County) |
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Unclassifiable/Attainment |
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| Ventura County (part) remainder |
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| Colusa County |
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Unclassifiable/Attainment |
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| Del Norte, Humboldt, and Trinity Counties): |
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Unclassifiable/Attainment |
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| Del Norte County |
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| Humboldt County |
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| Trinity County |
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| Nevada County (part) remainder |
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Unclassifiable/Attainment |
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| Glenn County |
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Unclassifiable/Attainment |
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| Kern County (part) remainder |
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Unclassifiable/Attainment |
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| Lake County |
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Unclassifiable/Attainment |
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| Lake Tahoe (El Dorado County Portion): |
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Unclassifiable/Attainment |
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| El Dorado County (part) remainder |
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| Lake Tahoe (Placer County Portion): |
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Unclassifiable/Attainment |
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| Placer County (part) remainder |
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| Lassen County |
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Unclassifiable/Attainment |
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| Mendocino County |
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Unclassifiable/Attainment |
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| Modoc County |
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Unclassifiable/Attainment |
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| Monterey County |
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Unclassifiable/Attainment |
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| Northeastern San Bernardino County and Eastern Riverside County |
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Unclassifiable/Attainment |
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| San Bernardino County (part) remainder |
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| Riverside County (part) remainder |
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| Sonoma County (part) remainder |
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Unclassifiable/Attainment |
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| Sutter County and Yuba County |
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Unclassifiable/Attainment |
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| Sutter County (part) remainder |
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| Yuba County |
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| Plumas and Sierra Counties |
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Unclassifiable/Attainment |
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| San Benito County |
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Unclassifiable/Attainment |
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| Santa Barbara County |
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Unclassifiable/Attainment |
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| Santa Cruz County |
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Unclassifiable/Attainment |
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| Shasta County |
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Unclassifiable/Attainment |
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| Siskiyou County |
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Unclassifiable/Attainment |
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| Tehama County (part) remainder |
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Unclassifiable/Attainment |
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| Tuolumne County |
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Unclassifiable/Attainment |
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| San Luis Obispo County (part) remainder |
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Unclassifiable/Attainment |
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